“问题的答案”这句短语的英文是什么？

the answer/key to the question本题很容易错，大家常把to 写成of.在遇到key/answer时，常常"的"不用of而用to。又如门的钥匙the key to the door,谜底the key to a puzzle.

The answer of a question

the answer/key to the question

the question's answer

The key of the question